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Calculate the pH and [S2− ] in a 0.17 M H2S solution. Assume Ka1 = 1.0 ✕ 10−7; Ka2 = 1.0 ✕ 10−19.? How would you determine the sequence of an unknown dipeptide? A tarpaulin canvas will be printed by advertisement with a 32 in2 rectangular printed region.? The area of a circle is given by (pi k squared minus twelve pi k plus 36 pie) square inches. What is the radius of the circle? An equilibrium constant is not changed by a change in pressure. Is this true or false.?